Question

A shopkeeper has $34$ balls in his shop. He sold $21$ balls to one customer. How many balls are now left with him $?$

• A. 13

Answer 1

The correct option is A 13
Total number of balls shopkeeper had initially $=34$

He sold $21$ balls to one customer.

Total number of balls remaining $=34-21$

Aligning numbers in the Place Value table,


For doing subtraction with only like terms.
One's digit of minuend will be subtracted by one's digit of subtrahend, ten's digit of minuend will be subtracted by ten's digit of subtrahend.

So,


Therefore, number of balls left with shopkeeper $=13$.